Hmm @panteradoug how was you r dash bolted on?
my 2 pod has 3 or 4 of them with a matching bracket in the dash (originally holding clips for sheet metal screws, and I substituted with studs)

single pod has… nothing up there (also, there is a sheel metal square on the single versus just a sheet metal piece sticking out on the double..)

2 pod dash: nothing at the ends
Single pod:

nothing to do with parachutes… But what’s not there… is not there.. did you just use the four bottom screws to hold it?
Or did DeTomaso made a “double dipping” and had everything on it on your car for both styles of dash…
At the time I wasn't thinking about documenting the installation so I didn't take pictures. As it turns out I would have lost those anyway in a hard drive crash.
My reply to you is that my single pod mounted exactly like the dual pod does. Four screws into the factory welded in brackets.
The only difference in mounting was in accessing the screw behind the speedometer through the speedometer mounting hole.
Since this was a dash built for me by Bob Byers, and I didn't have a 74 USA plastic single pod to compare it to, I can't tell you if there is a difference between the two.
Having said that though, there was no discussion between he and I about mounting differences because I never discussed what I was replacing with the new one.
He had the molds to make them and was the supplier at least to Hall of fiberglass Pantera parts.
How did you determine that the single pod and dual pod use different mounting points? My car is 4460. It was built in September of '72. It is an L and some call it a 72-1/2 model.
What differences there are in bracketry compared to a 1973 or 1974 build I would not know. Only someone who has worked on many Panteras CHANGING THE DASH's would know for sure and I'd speculate that they would only know how they were different would be because of what they were doing to the car, often oblivious to other differences that didn't effect them?
Again, only speculation on my part, but this dash fits perfectly to the car and the mounting presented no issue except the speedometer hole one. 
If you have further questions, I have no issue in answering them to the best of my ability. So ask away.
I will go back and re-emphasize that I think changing out the dash as I did is not for a novice to attempt. There are just too many little details that need to be dealt with that are specializations in reality. That is just my opinion or more correctly my caution to anyone considering this.
I will go and look at my single pod again and see if I notice differences with mine and those that you post pictures of.
One, right off the bat is mine was supplied as smooth, with no grain in it as you posted.
As a result I'm thinking the mold that Byers lifted was from a Euro car rather then a USA car?